MPO optical fiber connector

The invention relates to an MPO optical fiber connector. The MPO optical fiber connector comprises a shell assembly, wherein the shell assembly comprises an inner shell and an outer shell; the outer shell sleeves the inner shell in a manner of moving back and forth; the inner shell is provided with a hollow cavity; a plug core, a spring used for pushing the plug core forwards and a spring limitingbase used for limiting the spring are arranged in the hollow cavity; the spring limiting base is inserted into the rear part of the hollow cavity; a shell pin channel is arranged in the inner shell;a corresponding limiting base pin channel is arranged in the spring limiting base; the spring limiting base is positioned in the inner shell along the axial direction of the inner shell through a positioning pin which penetrates into the shell pin channel and the limiting base pin channel at the same time. According to the MPO optical fiber connector, the problem that the optical fiber connector is relatively long due to t